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<li class="navelem"><a class="el" href="../../dir_39dc0668bd5a501998f94e8b4e546c71.html">media</a></li><li class="navelem"><a class="el" href="../../dir_65f7acfa8cf3a5f1edc11faa2428b914.html">formats</a></li><li class="navelem"><a class="el" href="../../dir_3e9291fd7a18fdecc763294cb2628910.html">mp4</a></li> </ul>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2014 Google Inc. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Use of this source code is governed by a BSD-style</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// license that can be found in the LICENSE file or at</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#ifndef MEDIA_FORMATS_MP4_BOX_H_</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define MEDIA_FORMATS_MP4_BOX_H_</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &lt;stdint.h&gt;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/fourccs.h&quot;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="keyword">namespace </span>shaka {</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="keyword">class </span>BufferWriter;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">namespace </span>mp4 {</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">class </span>BoxBuffer;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">class </span>BoxReader;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html"> 27</a></span>&#160;<span class="keyword">struct </span><a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html">Box</a> {</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html">Box</a>();</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <span class="keyword">virtual</span> ~<a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html">Box</a>();</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="keywordtype">bool</span> <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a209382fcd42e82a896c29e856627ca52">Parse</a>(<a class="code" href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html">BoxReader</a>* reader);</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keywordtype">void</span> <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a15bd0622fdb129d921287e690f117bde">Write</a>(<a class="code" href="../../dc/d41/classshaka_1_1media_1_1BufferWriter.html">BufferWriter</a>* writer);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordtype">void</span> <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a57b8837c93d51f5cf03d3862069d509a">WriteHeader</a>(<a class="code" href="../../dc/d41/classshaka_1_1media_1_1BufferWriter.html">BufferWriter</a>* writer);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; uint32_t <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#aa4e47d0ba81e234707c76ca36e32c1d5">ComputeSize</a>();</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">virtual</span> uint32_t <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a8dea1032b6875b763ec06a133933160a">HeaderSize</a>() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">virtual</span> FourCC <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#ac7c07671ab4c56d19e085570862015ca">BoxType</a>() <span class="keyword">const</span> = 0;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="comment">// function expects that ComputeSize has been invoked already.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#ad0186e0f9301bd07c52a55a8b1db0419"> 55</a></span>&#160; uint32_t <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#ad0186e0f9301bd07c52a55a8b1db0419">box_size</a>() { <span class="keywordflow">return</span> box_size_; }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a160958fd4dd933f8b760bf61ec0f72c6">ReadWriteHeaderInternal</a>(<a class="code" href="../../d1/da1/classshaka_1_1media_1_1mp4_1_1BoxBuffer.html">BoxBuffer</a>* buffer);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="../../d1/da1/classshaka_1_1media_1_1mp4_1_1BoxBuffer.html">BoxBuffer</a>;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="comment">// Read/write the mp4 box from/to BoxBuffer. Note that this function expects</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="comment">// that ComputeSize has been invoked already.</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">bool</span> ReadWriteInternal(<a class="code" href="../../d1/da1/classshaka_1_1media_1_1mp4_1_1BoxBuffer.html">BoxBuffer</a>* buffer) = 0;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="comment">// Compute the size of this box. A value of 0 should be returned if the box</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="comment">// should not be written. Note that this function won&#39;t update box size.</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keyword">virtual</span> <span class="keywordtype">size_t</span> ComputeSizeInternal() = 0;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="comment">// We don&#39;t support 64-bit box sizes. 32-bit should be large enough for our</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="comment">// current needs.</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; uint32_t box_size_;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="comment">// Not using DISALLOW_COPY_AND_ASSIGN here intentionally to allow the compiler</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="comment">// generated copy constructor and assignment operator.</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;};</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="../../dd/dc1/structshaka_1_1media_1_1mp4_1_1FullBox.html"> 83</a></span>&#160;<span class="keyword">struct </span><a class="code" href="../../dd/dc1/structshaka_1_1media_1_1mp4_1_1FullBox.html">FullBox</a> : <a class="code" href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html">Box</a> {</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <a class="code" href="../../dd/dc1/structshaka_1_1media_1_1mp4_1_1FullBox.html">FullBox</a>();</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; ~<a class="code" href="../../dd/dc1/structshaka_1_1media_1_1mp4_1_1FullBox.html">FullBox</a>() <span class="keyword">override</span>;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; uint32_t <a class="code" href="../../dd/dc1/structshaka_1_1media_1_1mp4_1_1FullBox.html#a21cc4d085f650dc18a20a4dd05cb6750">HeaderSize</a>() <span class="keyword">const</span> <span class="keyword">final</span>;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; uint8_t version;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; uint32_t flags;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keywordtype">bool</span> <a class="code" href="../../dd/dc1/structshaka_1_1media_1_1mp4_1_1FullBox.html#ad72e5a2d0def5bbba75b440d060ef1cf">ReadWriteHeaderInternal</a>(<a class="code" href="../../d1/da1/classshaka_1_1media_1_1mp4_1_1BoxBuffer.html">BoxBuffer</a>* buffer) <span class="keyword">final</span>;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="comment">// Not using DISALLOW_COPY_AND_ASSIGN here intentionally to allow the compiler</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="comment">// generated copy constructor and assignment operator.</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;};</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;} <span class="comment">// namespace mp4</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;} <span class="comment">// namespace shaka</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="preprocessor">#endif // MEDIA_FORMATS_MP4_BOX_H_</span></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_ac7c07671ab4c56d19e085570862015ca"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#ac7c07671ab4c56d19e085570862015ca">shaka::media::mp4::Box::BoxType</a></div><div class="ttdeci">virtual FourCC BoxType() const =0</div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1FullBox_html_a21cc4d085f650dc18a20a4dd05cb6750"><div class="ttname"><a href="../../dd/dc1/structshaka_1_1media_1_1mp4_1_1FullBox.html#a21cc4d085f650dc18a20a4dd05cb6750">shaka::media::mp4::FullBox::HeaderSize</a></div><div class="ttdeci">uint32_t HeaderSize() const final</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00075">box.cc:75</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1FullBox_html_ad72e5a2d0def5bbba75b440d060ef1cf"><div class="ttname"><a href="../../dd/dc1/structshaka_1_1media_1_1mp4_1_1FullBox.html#ad72e5a2d0def5bbba75b440d060ef1cf">shaka::media::mp4::FullBox::ReadWriteHeaderInternal</a></div><div class="ttdeci">bool ReadWriteHeaderInternal(BoxBuffer *buffer) final</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00080">box.cc:80</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1BoxBuffer_html"><div class="ttname"><a href="../../d1/da1/classshaka_1_1media_1_1mp4_1_1BoxBuffer.html">shaka::media::mp4::BoxBuffer</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dc/dbf/box__buffer_8h_source.html#l00025">box_buffer.h:25</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1FullBox_html"><div class="ttname"><a href="../../dd/dc1/structshaka_1_1media_1_1mp4_1_1FullBox.html">shaka::media::mp4::FullBox</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d19/box_8h_source.html#l00083">box.h:83</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_a160958fd4dd933f8b760bf61ec0f72c6"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a160958fd4dd933f8b760bf61ec0f72c6">shaka::media::mp4::Box::ReadWriteHeaderInternal</a></div><div class="ttdeci">virtual bool ReadWriteHeaderInternal(BoxBuffer *buffer)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00061">box.cc:61</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1BufferWriter_html"><div class="ttname"><a href="../../dc/d41/classshaka_1_1media_1_1BufferWriter.html">shaka::media::BufferWriter</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dd/dd2/buffer__writer_8h_source.html#l00022">buffer_writer.h:22</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_aa4e47d0ba81e234707c76ca36e32c1d5"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#aa4e47d0ba81e234707c76ca36e32c1d5">shaka::media::mp4::Box::ComputeSize</a></div><div class="ttdeci">uint32_t ComputeSize()</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00050">box.cc:50</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_ad0186e0f9301bd07c52a55a8b1db0419"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#ad0186e0f9301bd07c52a55a8b1db0419">shaka::media::mp4::Box::box_size</a></div><div class="ttdeci">uint32_t box_size()</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d19/box_8h_source.html#l00055">box.h:55</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html">shaka::media::mp4::Box</a></div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d19/box_8h_source.html#l00027">box.h:27</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_a8dea1032b6875b763ec06a133933160a"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a8dea1032b6875b763ec06a133933160a">shaka::media::mp4::Box::HeaderSize</a></div><div class="ttdeci">virtual uint32_t HeaderSize() const </div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00055">box.cc:55</a></div></div>
<div class="ttc" id="classshaka_1_1media_1_1mp4_1_1BoxReader_html"><div class="ttname"><a href="../../d1/dee/classshaka_1_1media_1_1mp4_1_1BoxReader.html">shaka::media::mp4::BoxReader</a></div><div class="ttdoc">Class for reading MP4 boxes. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d92/box__reader_8h_source.html#l00025">box_reader.h:25</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_a209382fcd42e82a896c29e856627ca52"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a209382fcd42e82a896c29e856627ca52">shaka::media::mp4::Box::Parse</a></div><div class="ttdeci">bool Parse(BoxReader *reader)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00019">box.cc:19</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_a15bd0622fdb129d921287e690f117bde"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a15bd0622fdb129d921287e690f117bde">shaka::media::mp4::Box::Write</a></div><div class="ttdeci">void Write(BufferWriter *writer)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00025">box.cc:25</a></div></div>
<div class="ttc" id="structshaka_1_1media_1_1mp4_1_1Box_html_a57b8837c93d51f5cf03d3862069d509a"><div class="ttname"><a href="../../d1/d2d/structshaka_1_1media_1_1mp4_1_1Box.html#a57b8837c93d51f5cf03d3862069d509a">shaka::media::mp4::Box::WriteHeader</a></div><div class="ttdeci">void WriteHeader(BufferWriter *writer)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d4d/box_8cc_source.html#l00038">box.cc:38</a></div></div>
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